The main goal of this paper is to provide a descriptive analytical overview of the existing evolution of the Slovenian parliamentary arena since its transition to democracy and independence. The paper is divided into two main parts: (1) an overview of a normative insight into the parliamentary and party system, and (2) an analytical assessment of the structure of the parliamentary arena as it is reflected in electoral and parties’ choices and policy preferences. A look at the contemporary democratic parliamentary arena in Slovenia shows that it, in itself, has been quite stable, while, on the contrary, its main integral parts – political parties – have gradually become less stable and less predictable, especially in the second decade of democracy, which can potentially influence the future stability of parliamentary arena, too.